Biden says transition outreach from Trump administration has been 'sincere' - CNN

Anthony Fauci, the nation's top infectious diseases doctor, said Tuesday he has had preliminary conversations with members of Biden's team and looks forward to more substantive discussions in the future.

The GSA letter was the first step the administration has taken to acknowledge President Donald Trump's defeat and marked a considerable turning point against his bid to overturn his loss.

Still, the Biden team had not waited for the formal transition process to begin preparing for the presidency, as Biden announced a flurry of Cabinet picks on Monday.

Looking ahead to his administration Tuesday, Biden vowed his term would not be "a third Obama term."

"We face a totally different world than we faced in the Obama-Biden administration," he said.

It's a totally -- that's why I've found people who join the administration and keep points that represent the spectrum of the American people as well the spectrum of the Democratic Party."

Asked Tuesday if he supports investigations into Trump after he leaves office, as some Democrats have called for, Biden vowed to "not do what this President does and use the Justice Department as my vehicle to insist that something happen."

"There are a number of investigations that I've read about that are at a state level.

Bernie Sanders or Elizabeth Warren about Cabinet positions, Biden said, "We already have significant representation among progressives in our administration, but there's nothing really off the table."

He added, however, that "taking someone out of the Senate, taking someone out of the House, particularly a person of consequence, is really a difficult decision that will have to be made."

Biden told NBC that he would consider appointing Republicans who voted for Trump to his Cabinet.

"I want this country to be united.